1965 GMC in the alps. Greetings from Austria.

[GMCTom]

Originally Posted by GMCTom

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I ordered a new waterneck (75 Pontiac TransAm) because the old one was a modified from a Chevy small block. Let's see if it fits.

The waterneck of the 75 Pontiac TransAm fits together with the holes. Only problem is, that you can't use the heat sensor.



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[Prowbar]

GMCTom, Great work you've done so far! Great info as well regarding the clutch etc. No other modifications to the engine other than replacing the timing chain?

[GMCTom]

Thank you

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I changed the timing chain and toghether with a friend we do a valve job. One exhaust valve was broken and doesn't close completely. Cleaned the coolant holes and finished the surfaces of the block and heads and used new gaskets. Heads were ice blasted.
I also installed an original mechanical fuel pump (the pre owner used an electrical) and new fuel lines.

[snazzypig]

Beautiful work GMCTom and your engine sounds great!

[GMCTom]

Little update but with not so good news.

The original radiator is leaking. Temporarily I bought a used one from a 1966 Chevy C10. It seems to be ok. The dark spot on the front of the radiator is only dirt. The original one I will send to a shop for repairing.



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Now the bigger problem. Between the left cylinder head and the block it's leaking a little bit coolant. I think I have to grind the heads. Maybe anyone else had an advice or already had the problem itself?